The IQGAP2 Knockout SK-HEP-1 Polyclonal Cells represent a flexible loss-of-function model generated by CRISPR/Cas9-mediated disruption of the IQGAP2 gene in the SK-HEP-1 human liver adenocarcinoma cell line. Provided as a polyclonal knockout cell population, this product maintains the heterogeneous genetic background of the original pool while introducing a stable disruption of the target locus. This format is well suited for studies requiring a population-level knockout phenotype without the clonal selection bottlenecks inherent to single-cell-derived lines. Researchers can apply this model to investigate scaffold protein function, cell adhesion dynamics, and tumor cell behavior in a genetically perturbed hepatic cancer context.
The host SK-HEP-1 cell line was originally isolated from ascites of a patient with liver adenocarcinoma. These cells display a mixed epithelial and endothelial phenotype and are widely employed as a malignant hepatic epithelial model. Their dual characteristics make them particularly valuable for examining tumor cell plasticity, migration, and metastatic properties. The adenocarcinoma origin provides a clinically relevant background for investigating molecular mechanisms underlying hepatocellular carcinoma and for evaluating potential therapeutic targets in liver cancer.
IQGAP2 functions as a multi-domain scaffold protein that orchestrates the spatial and temporal regulation of the actin cytoskeleton, cell?Ccell adhesion, and Rho GTPase signaling. It directly interacts with a network of proteins including calmodulin, actin, E-cadherin, ??-catenin, Rac1, Cdc42, APC, and CLIP-170. Through these interactions, IQGAP2 modulates adherens junction stability and integrates extracellular cues from upstream regulators such as Wnt3a, HGF, and EGF. In unperturbed cells, IQGAP2 acts to suppress Rac1 and Cdc42 activities, thereby limiting excessive actin polymerization and maintaining epithelial integrity. It also controls ??-catenin nuclear translocation and TCF/LEF-mediated transcription, positioning IQGAP2 as a critical node linking Wnt/??-catenin signaling to cytoskeletal remodeling.
Disruption of IQGAP2 in SK-HEP-1 cells profoundly alters their biological behavior. Loss of IQGAP2 scaffolding leads to destabilization of the E-cadherin adhesive complex, enhanced Rho GTPase activity, and a shift in ??-catenin signaling toward a more active transcriptional state. The resulting phenotype includes increased cell migration, invasion, and a partial epithelial-mesenchymal transition, recapitulating features of aggressive tumor progression. This knockout model thus enables dissection of how a single scaffold protein coordinates multiple oncogenic pathways. It provides a platform for studying the transition from a cohesive tumor mass to a migratory and invasive state, which is central to cancer metastasis.
This product is tailored for advanced cancer research applications. Typical uses include quantitative assessment of cell migration using Boyden chamber assays, invasion studies through matrix-coated filters, and detailed examination of cell adhesion by immunofluorescence microscopy. Western blotting and co-immunoprecipitation allow characterization of IQGAP2 interaction partners and downstream effectors such as active Rac1/Cdc42 measured by G-LISA. Luciferase-based TOP/FOP flash assays enable direct readout of Wnt pathway activation. The polyclonal knockout cells are also suitable for drug screening and functional genomics studies targeting metastatic phenotypes. For additional information or technical support, please contact Ascent Research.
